Automatic cut-off for valves.



A. (SL W. V. HEWV.

AUTOMATIC CUT-OFF [FOS VALVS.

APPUcATmN min mazo. 19:4.

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UNITED sTATEs PATENT oEErcE.

.ALBURTON HEWITT, OF SOUTH BEND, INDIANA, AND WALTER V. HEWITT, OF CHICAGO, ILLINOIS.

AUTOMATIC CUT-OFF FOR VALVES.

Specification of Letters Patent.

Patent-ed Apr. 1s, 191e.

Application led August 20, 1914. Serial No. 857,674.

South Bend, in the county of St. Joseph and State of Indiana, and at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Automatic Cut- Offs Valves, of which the following is a speciication.

The invention relates to an improvement in automatic cut ods for valves, comprehending a structure wherein the valve, manually set through the mechanism, is deV signed for automatic reverse operation.

The improved valve is more or less particularly designed for use in connection with laundry washing tanks, for which reason it is duplex type, so that hot or cold water or a mixture of both may be admitted to the tank, and the valves or valve automatically closed when the liquid in the tank has reached a predetermined level.

The invention in the preferred form olf details will be described in the ,following specification, reference being had parti-ularly to the accompanying drawings, in which Figure l is a view in elevation, partly in section, illustrating the improved vave structure in its application. Fig. 2 is a side elevation of the valve structure. Fig. 3 is a bottom plan of the same.

In the particular application of the improved mechanism described, 1 represents a laundry Washing tank, or similar receptacle, into which near the bottom leads an upstanding feed pipe 2. Supported upon the upper end ofthe feed pipe is a valve casing 3, in this instance supporting duplicate valves 4, the valves independently controlling the delivery of Huid from independent supply pipes 5 to the feed pipe 2. By this control hot or cold Water, independently supplied through the pipes 5, may be de.- livered in any proportion, or one Without lthe other, at the will of the user, and as is desirable in use with laundry apparatus.

The present invention is directed more particularly to automatic means for governing the valves upon the fluid supplied reaching a predetermined level in the tank, the

i structure bein adjustable to cut off the supply at any desired level.

forv

Each of the valves is of the threaded type, and the threads thereof are of high pitch, so that a partial rotation of the stem 6 of the valve Will serve to open or close the valve in accordance With the direction of rotation. An operating arm 7 is secured upon the stem 6 of each valve, said arm including a body portion 8 formed with an i opening to receive the stem, and secured thereon through the medium of a set screw 9, to provide for adjustment of the arm on the stem I"or a purpose which will later appear. r.l he ara extendsbeyond the stem toward thel oppofanz-g valve, and throughout the projectrd portion is rounded on the lower face as at 1f),r anni beveled on one edge as at l1. The cnposng end of the arm is of approximately enifcfwn diameter to slidably receive a aigle 2 held thereon through the medium of a v-t screw 13.' The extreme end of the aren 'opposite the weight carrying end is ifm-zn.y d to provide a shoulder or notch la, arting as the holding element of the arm, as will later appear.

Projecting from the valve casing 3 a plate .l 5 underlying the stems 6 of the valves and formed with longitudinally extending slots 1G at the forward end. In these slots are pivotally supported the locking levers 18. These levers are approximately l.- shaped, pivotally mounted slightly above the angle, the rearwardly extending arms 19 thereof underlying the plate 15, while the upwardly extending arms 20 terminate in hook portions 21 adjacent the path of movement of the notches 14 of the operating arm. On the relatively inner faces of the terminals of the portions 19 ofthe levers are f cular faces of the trip blocks are opposed,

and provide space therebetween for the sliding movement of a stem or rod 23. This rod extends longitudinally of the feed pipe 2, and at its lower end carries a float 24 operating in a chamber 25 extending longitudinally of and in parallelism with the feed pipe, and in open communication with the tank 1 through a pipe 26. Adjustably secured on the rod 23 is a trip collar 27, having a diameter exceeding that of the space between the trip blocks 22.

In operation, the operating arms are, s; mounted on the stem 6 that when the arms are in their lowered position, as shown in dotted lines in Fig. 1, the valves are closed, the full position indicating open valves. 'The valves, either or both, are opened by elevating the arms 7 until the shoulders 14 are enaged by the hook '21 of the levers 18. The evers then operate to hold the valve open until the Heat, with the collar 27 adjusted as desired, rises to a point Where the levers 18 are actuated to release the operating arm. The Weights 1Q then turn the arms to close the valve.

It is obvious that through adjustment of the arm 7 on the stem 6, through the set screws 9, the relative volume of hot and cold Water may be regulated, as the rotative movement of one stem will not then be as great as the other when the arms are in their fully raised or latched position.

While primarily designing the device as a control for washing machines, it is of course to be understood that we contemplate thel use of the automatic regulator with any type of device with which it may be functionally adapted.

What is claimed is 1. A supply system for washing machines. including a feed pipe leadingr into the tank, independent supply pipes, a valve controlling the fluid from each supply pipe, a weighted arm for operating each valve, a plate supported adjacent both valves, a plurality of levers pivotally mounted in the plate7 one terminal ot each lever being formed for loc-king cooperation with an arm to hold the latter against movement under the inuencelported beneath and adjacent each valve, a

plurality of angle levers mounted in the plate, one terminal of ear-li lever being foi-ined -for locking cooperation with an arm, the remaining terminals of the levers being each formed with trip blocks, the adjacent faces of the blocksl beingrecessed and arranged adjacent together to present an opening, and a float-controlled rod having a stop and operating through thc trip-block opening.

In testimony whereof we affix our signatures in presence of two witnesses.

ALBURTON HEWITT. W ALTER V. HEWITT.

lVitnesses to signature of Alburton Hewitt:

n'riii'u L. (iLiiiAx, Gnomi: J. OL'rsCH. Witnesses to signature of falter V. Hewitt:

A. M. Ho'rzn,

l). R. lxonnsom.. 

